package com.leo.foodmaster.admin.common;

import cn.hutool.core.util.StrUtil;
import com.leo.foodmaster.commons.annotation.Inner;
import com.leo.foodmaster.commons.config.FoodMasterProperties;
import com.leo.foodmaster.commons.config.ServerConfig;
import com.leo.foodmaster.commons.constants.Constants;
import com.leo.foodmaster.commons.entity.Result;
import com.leo.foodmaster.commons.util.FileUploadUtils;
import com.leo.foodmaster.commons.util.FileUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@Slf4j
@RestController
public class CommonController {

    @Resource
    private ServerConfig serverConfig;

    /**
     * 通用下载请求
     * 
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("/common/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response) {
        try {
            if (!FileUtils.checkAllowDownload(fileName)) {
                throw new Exception(StrUtil.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = FoodMasterProperties.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete) {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    @Inner
    public Result<Object> uploadFile(MultipartFile file) {
        try {
            // 上传文件路径
            String filePath = FoodMasterProperties.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getFileUrl() + fileName;
            Map<String, Object> map = new HashMap<>(2);
            map.put("fileName", fileName);
            map.put("url", url);
            return Result.success(map);
        } catch (Exception e) {
            return Result.fail(e.getMessage());
        }
    }

    /**
     * 通用文件删除请求
     */
    @PostMapping("/common/delete")
    @Inner
    public Result<Object> deleteFile(@RequestParam String filePath) {
        try {
            String basePath = System.getProperty("user.dir");
            FileUtils.deleteFile(basePath + filePath);
            return Result.success();
        } catch (Exception e) {
            return Result.fail(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/common/download/resource")
    public void resourceDownload(String resource, HttpServletResponse response) {
        try {
            if (!FileUtils.checkAllowDownload(resource)) {
                throw new Exception(StrUtil.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = FoodMasterProperties.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }
}
